package day03;
//字符串连接运算符
public class OperDemo5 {
    public static void main(String[] args) {
        //5)字符串连接运算符: +
        int age = 40;
        System.out.println("age=");     //age=
        System.out.println(age);        //40
        System.out.println("age=" + age);   //age=40
        System.out.println("我今年" + age + "岁了");     //我今年40岁了

        String name = "WKJ";    //声明字符串变量name, 并赋值为WKJ
        System.out.println("大家好, 我叫" + name);   //大家好, 我叫MKJ
        System.out.println("大家好, 我叫" + name + ", 今年" + age + "岁了"); //大家好, 我叫MKJ, 今年40岁了

        System.out.println(10 + 20 +"" + 30);   //3030--------String
        System.out.println("" + 10 + 20 + 30);  //102030--------String
        System.out.println(10 + 20 + 30 + "");  //60--------String
    }
}
